Well, I didn't get any bug/glitch on S.S.Anne. For now the only things I found out were not being able to run (running shoes) in the Squirtle Squad episode and on the Pokemon Island episode (the one after the S.S.Anne), Tentacruel's cry is Unown's or something.

^ As I said in an earlier post, I couldn't replicate the turning Pokemon to egg error. I've had that happen to me with older versions of those scripts, though, but I haven't gotten those errors with the current scripts.

If you come across that error in the Mewtwo Strikes Back event and/or Bulbasaur's Mysterious Garden event, please post and report as many details (including full Pokemon party used and order if possible) so that I can try to replicate those circumstances. Also, try patching a different rom and see what happens.